Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, and idempotentHint=false, which covers the safety profile. The description adds no behavioral context beyond that — no statement about required permissions, whether settings are environment-scoped, or whether the call can fail for an unconfigured rollout.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.